msd 6010 backfires sometimes?
08-02-2016, 06:37 PM
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msd 6010 backfires sometimes? I built a carb 5.3 for my 92 Camaro, basically stock other than cam/supporting mods. I'm using the 6010 box, no map sensor.
When I first installed it and wired it up it fired right up and sounded great, that was Thursday. Saturday I went back to the garage to work on it some more and when I tried starting it it backfired out of the carb, I was using the #6 pill, zeroed out the map sensor but the cam sensor failure alert came up, so I went and got a new one and replaced it, same thing. I pulled the #6 pill and put the #4 in, fired right up and sounded great again (still showing cam sensor failure.) I let it run and idle for a minute or so and shut it off, tried starting it and it back fired again. Switched pills again just to see, same result. Runs fine the first time, backfires the next.
I switched coil wiring harness with some old ones I had laying around, the box is grounded directly to the battery, 12v to ignition.
I'm starting to think it's the box? I've went over all the wiring multiple times, checked all the plugs, not sure what else to do.
anybody else have this issue?
When I first installed it and wired it up it fired right up and sounded great, that was Thursday. Saturday I went back to the garage to work on it some more and when I tried starting it it backfired out of the carb, I was using the #6 pill, zeroed out the map sensor but the cam sensor failure alert came up, so I went and got a new one and replaced it, same thing. I pulled the #6 pill and put the #4 in, fired right up and sounded great again (still showing cam sensor failure.) I let it run and idle for a minute or so and shut it off, tried starting it and it back fired again. Switched pills again just to see, same result. Runs fine the first time, backfires the next.
I switched coil wiring harness with some old ones I had laying around, the box is grounded directly to the battery, 12v to ignition.
I'm starting to think it's the box? I've went over all the wiring multiple times, checked all the plugs, not sure what else to do.
anybody else have this issue?
08-03-2016, 10:03 AM
#2
The problem is no signal from the cam sensor. Without it you have a 50-50 chance of it starting up with the right timing or a full 180° out of phase. Exactly the symptoms you are describing.
My guess is an issue in the wiring. There is a way you can check your cam sensor output voltage using a multimeter. Try a search.
Good luck.
My guess is an issue in the wiring. There is a way you can check your cam sensor output voltage using a multimeter. Try a search.
Good luck.
08-21-2016, 08:41 PM
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08-26-2016, 07:56 AM
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well I sent my box back to msd and it tested good, checked all my grounds, getting 12v to the cam, crank, box. Battery is as the 13.5, only thing I'm noticing is my cam sensor signal is at 9v with the key on, but drops to 0 when cranking and still throws the code.
08-26-2016, 11:37 AM
#7
Can you pull off the harness and measure the resistance of the cam wires (end to end) and the resistance between the wires and ground/other wires?
Might be a bad connection or something sorting to ground.
Might be a bad connection or something sorting to ground.